<?php
    $txt1 = "学习 PHP";
    $txt2 = "RUNOOB.COM";
    $cars = array("Volvo", "BMW", "Toyota");
   
    echo $txt1;
    echo "<br>";
    echo "在$txt2 学习 PHP";
    echo "<br>";
    echo "我车的品牌是{$cars[0]}";   
?>